Eratosthenes made several important contributions<span> to mathematics and science, and was a friend of Archimedes. Around 255 BC, he invented the armillary sphere.
</span>Eratosthenes is also known for his achievement in astronomy. Several astronomers and mathematicians before and after Eratosthenes<span> tried to accurately measure the circumference of the Earth, but is was </span>Eratosthenes<span> that came through. He found the circumference of the Earth to be nearly 250,000 stadia (25,000 miles).
</span><span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
</span>
It was primarily that "<span>D. Growing populations in eastern cities greatly increased the demand for beef," since along with the advent of the rail lines, getting the meat to the consumer was far easier. </span>
Answer:
The amount of land gained by the United States from Mexico was further increased as a result of the Gadsden Purchase of 1853, which ceded parts of present-day southern Arizona and New Mexico to the United States.
You’re wrong he did discover China he wasn’t trying to keep Spain away he was actually keeping it further